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The actual impedance load the HDL-4 presents to your
receiver or amplifier will vary, depending on how many
speaker pairs are playing, and the im pedance rating of each
speaker. If you have four pairs of 8-ohm speakers playing, the
HDL-4 will present a 4.5 ohm impedance load to your receiv-
er/ amplifier. With four pairs of 4-ohm speakers playing, the
load drops to slightly under 4 ohm s.
If you intend to use the HDL-4 with more than two pairs of
4-ohm speakers, it is recom mended that you verify that the
receiver or amplifier is capable of driving a 4-ohm load. Consult
your Niles dealer, or receiver/ amplifier manufacturer, if you are
uncertain about the capabilities of the receiver/ amplifier.
Type of Speaker Wire
For most applications, we recomm end you use 16 or 18 gauge,
stranded copper speaker wire for the HDL-4 connections. For
wiring runs longer than 80 feet, 14 gauge wire is recommend-
ed. Using speaker wire larger than 14 gauge for the HDL-4
connections is not recommended the wire may not fit into
the connectors. Never use solid-core, aluminum, or "Romex"
type wire with the HDL-4. When running speaker wires inside
walls, most states and m unicipalities in the U.S. specify that
you must use a special type of speaker wire. Usually, the
requirement is that the wire has a specific "CL" fire rating, such
as "CL-2" or "CL-3". Consult your Niles dealer, building contrac-
tor, or local building and inspection departm ent if unsure
about which type of wire is best for your application.
5
H
IGH
D
EFINITION
S
PEAKER
S
ELECTION
S
YSTEM
"TECH TIP"
Wire size is
expressed by it's
AWG (American
Wire Gauge)
number. The lower
the AWG number,
the larger the
wire,
i.e., 12 AWG wire is
physically larger
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